30 weeks

Your baby's about 15.7 inches long now, and he weighs almost 3 pounds (like a head of cabbage). A pint and a half of amniotic fluid surrounds him, but that volume will decrease as he gets bigger and takes up more room in your uterus. His eyesight continues to develop, though it's not very keen; even after he's born, he'll keep his eyes closed for a good part of the day. When he does open them, he'll respond to changes in light but will have 20/400 vision - which means he can only make our objects a few inches from his face.